Vehicle efficiency information display and method
a technology for efficiency information and vehicles, applied in vehicle testing, structural/machine measurement, instruments, etc., can solve the problems of reducing efficiency, reducing efficiency, and reducing fuel economy, so as to reduce efficiency, reduce efficiency, and waste energy.
Active Publication Date: 2009-09-17
FORD GLOBAL TECH LLC
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AI Technical Summary
Benefits of technology
The present invention provides an information display for vehicles that indicates the efficiency of the vehicle's operation. The display analyzes various driving behaviors, such as hard acceleration, high driving speed, braking beyond the regenerative braking limits, and air conditioning use, to determine if the vehicle is operating efficiently or inefficiently. The display can be used in both conventional and non-conventional vehicles, such as hybrid electric vehicles (HEVs) and electric vehicles (EVs). The efficiency information is measured based on factors such as wheel torque, power, and braking events. The display can also indicate the relative amount of creep torque cancellation, which occurs when the vehicle is in a creep situation. Overall, the invention provides a more accurate measure of vehicle efficiency and helps drivers improve their fuel economy.
Problems solved by technology
There are a number of different driving behaviors that are known to waste energy, and ultimately result in reduced efficiency.
Even though such a reduction in efficiency may result in lower fuel economy, these factors are not measured by a comparison of instantaneous fuel economy in the various states of operation.
Method used
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Embodiment Construction
[0033]FIG. 1 shows a schematic representation of a vehicle 10, which includes an engine 12 and an electric machine, or generator 14. The engine 12 and the generator 14 are connected through a power transfer arrangement, which in this embodiment, is a planetary gear arrangement 16. Of course, other types of power transfer arrangements, including other gear sets and transmissions, may be used to connect the engine 12 to the generator 14. The planetary gear arrangement 16 includes a ring gear 18, a carrier 20, planet gears 22, and a sun gear 24.
[0034]The generator 14 can also be used as a motor, outputting torque to a shaft 26 connected to the sun gear 24. Similarly, the engine 12 outputs torque to a crankshaft 28, which is connected to a shaft 30 through a passive clutch 32. The clutch 32 provides protection against over-torque conditions. The shaft 30 is connected to the carrier 20 of the planetary gear arrangement 16, and the ring gear 18 is connected to a shaft 34, which is connect...
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An efficiency information display for a vehicle includes an indicator arrangement having a visual display configured to provide vehicle efficiency information to an operator of the vehicle. The visual display includes a target vehicle efficiency. A control system, including at least one controller, is configured to receive at least one input related to current operating conditions of the vehicle. The control system provides at least one output to the indicator arrangement, such that the visual display indicates to the vehicle operator a current relative operating efficiency of the vehicle. The at least one input includes at least one of: information related to positive vehicle propulsion, information related to vehicle braking, or information related to vehicle creep torque cancellation. The control system is further configured to use the at least one input to determine the current relative operating efficiency of the vehicle independently from a fuel economy calculation for the vehicle.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an efficiency information display for a vehicle and a method for displaying vehicle efficiency information.[0003]2. Background Art[0004]All vehicles, whether passenger or commercial, include a number of gauges, indicators, and various other displays to provide the vehicle operator with information regarding the vehicle and its surroundings. With the advent of new technologies, such as hybrid electric vehicles (HEV's), has come a variety of new gauges and information displays that help drivers to better learn the operation of these vehicles that utilize new technology. For example, many HEV's incorporate gauges that attempt to provide the driver with information on the various hybrid driving states. For example, some gauges will indicate to the driver when the vehicle is being propelled by the engine alone, the motor alone, or a combination of the two. Similarly, a display may indicate wh...
Claims
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IPC IPC(8): G06F7/00
CPCG07C5/0825G07C5/004
Inventor CROMBEZ, DALE SCOTT
Owner FORD GLOBAL TECH LLC